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there are a few kinds of BH that help cars start from extreme cold weather,8 g) O( y u& ]% p8 l: A+ c
basically , BH keep the car warm by heating up the oil pan-which keeps the engine oil from frozen, or by heating up the coolant, and keep the engine block warm.2 w0 ^; l& \" n$ [- M
Either way, the engine shall not be frozen with use of BH.
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3 D/ i$ x! l# ?0 n+ R5 B7 D( SIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
2 M" y8 G7 m' n5 M2 ]) n# SA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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